Cover-support.



B. B. BLOOD. COVER SUPPORT. APPLICATION min yuNm. 19u.

Patented Mar. LJ., 1919.

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BURR B. BLOOD, OF CHICAGO, ILLINOIS, ASSIGNOR TO GEORGE HEIDMAN AND NORMAN A. STREET, BOTH OF CHICAGO, ILLINOIS.

COVER-SUPPORT.

T0 all whom t may concern:

Be it known that I, BURR B. BLOOD, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Cover-Supports, of which the following is a description, reference bein had to the accompanying drawing, whic forms a part of my specification.

My invention relates more particularly to a support for the cover of a phonograph cabinet; having for its object the provision of a construction which will automatically assume a supporting position when the cover or lid has been raised or tilted; the construction at the same time being such that a predetermined degree of pressure on the cover or lid, when it is desired to lower or return same to closed position, will. move the support out of supporting position.

The invention may have expression in different mechanical forms without, however, departing from the spirit of the invention; the drawing, however, illustrating what I believe to be the best forms of the invention; the advantages and operation whereof will be more fully .comprehended from the following detailed description of the accompanying drawing, wherein Figure 1 is a cross sectional view of the upper part and lid Aor cover of a phonograph cabinet illustrating my invention in .elevation, with the cover in closed position. v

Fig. 2 is a similar sectional view illustrating the position of theV support whenthe cover is raised or'tilted.

Fig. 3 is a cross-sectional view taken on the line 3 3 of Fig. 1, looking downwardly. Fig. 4 illustrates a modified form of my invention; the upper part of the phonograph cabinet and portion of the cover beinl shown Specification of Letters Patent.

Patented Mar. 4, 1919.

Application nea nine 4, 1917. serial No. 172,576.

providing a pivotal point at 12 for a dependingplink or arm 13.

he opposite end of link 13 has pivotally secured thereto, two links 14 and 15, preferably of substantially equal length. The link 14 has a fixed pivotal point at 16 on a fixed horizontally disposed bar 17 which is suitably secured on the -inside of the phonograph cabinet indicated at 18. Link 14 is free to oscillate vertically about its pivotal point 16; while the link 15 has slot and pin connection with the'bar 17 by means of a suitable pin 19 which is adapted to slide in the slot 20 of bar 17 the pin 19 being at the free end of link 15, as shown in Fig. 2. The slot 20` extends lengthwise of bar 17 for a predetermined distance, to wit to a point slightly to one side of the vertical plane normally occupied by link 13, namely when the device is in non-supporting position, as indicated in Fig. 1.

At a suitable point intermediate of the .ends of both links 14 and 15, I provide a retracting coil spring 21; the `ends of the spring 21 being secured at 22 to link 14 and at 23 tol link 15, preferably at a point in proximity to the ends of the links farthest removed from their pivotal connections with link 13. I prefer to provide one of the links, as for example link 15, with a series of holes 23a, see Figs. 2 and 3, adapted to receive the Vend of the spring 21 or a suitable pin as shown. With one of the links thus provided with a number of securing points for one end of the spring, it is evident that the tensionof spring 21 may be regulated so as to induce positive collapsing movement of the toggle lever construction and cause the link 15 to remain in its intimate relation with link 14.

The bar 17 is preferably placed in the same horizontal plane as the lower end of link 13 when the latter is in its normal vertical position. As links 14 and 15 are secured to bar 17, it is apparent that when the device is in normalV positiomnamely when the cover or lid is lowered or closed, as shown in Fig. 1, the links 14 and 15 will extend substantially parallel with bar 17. With the links 14 and 15 in the horizontal or distended condition Vshown in Fig. 1. the spring 21 is expanded and placed under increased tension; the pullV ing the lid or cover 10, link 13- will also lift the adjacent ends of links 14 and 15 so as to move the pivotal point between links 13, 14 and 15' off dead center as it were, and therefore also cause the spring 21 to be moved slightly above the dead center of the piv- OL'al pOIltS Of the links which will allow the A tension of the spring to immediately come into play, and cause the link 15 to move to# ward link 14. The tension of the spring 21 will be sufficient to maintain the toggle lever construction in the position induced through the lifting of the lid or cover, as shown 1n Fig. 2; in other words, the tension of the sparing 21 is suicient to maintain they weight ofthe cover or lid l0.

In Fig. 4, I show a modified form of my invention, wherein the cover 10 is provided with a similar'bracket or lug 11 to. which is pivotally secured a link 24 similar in construction to link 13. Thelower end of link 2 4 is pivotally secured to links 25 and 26; link 25 preferably having a vfixed pivotal point at27 on a fixed inclined bar 28; vthe latter being lixedly secured to the inside of the phonograph cabinet. Link 26 has its oppositeend pivotally secured at 29 to a link 30 which latter is, in turn, pivotally secured to thefiXed bar 28; thus providing a floating connection, as it were, for link26. Links 25, 26 and 30 are preferablyshown as of equal length.

VSecured in any suitable manner to links 25 and 26`Yis a retracting coil spring 31', so securedto links 25 and 26 that the spring will be' greatlyidistended or expanded when the device is innen-supporting position, as indicated in full lines in Fig, 4, at whichmoment the spring 31 will beexerting its pull or tension in a' direction or line parallel with'the pivotal points of links24,l 25 and 26, and therefore on i dead center. The spring, like spring 21', may have adjustable relation with one ofthe lin-ks, so as to permit regulation of the tension.

When the cover or lid 10 is lifted, link 2 will lift the adjacent ends of links 25 and 26 with it, and' therefore oli" dead center, so that spring 31 will immediately come into play and maintain the links 25 and 26 in their raised position. Upon the collapsingY movement of links 25 and 26, the latter will be ncaused to move bodily from theposition shown in full lines and thereby induce link Boito swing through the arc of a circle to the position indicated in dotted lines where the link substantially. parallel with link 25'; the positioning of the support beingshown in dotted .line`s.` The spring 3l, like-spring 21'in the previouslydescribed construction,

is intended to havesuiiicient tension to main tain the'linksin their intimate-or raised posi- ,tionsl and thus holdv the cover or lid 10 in its elevated position as shownl in dotted; lines.

As visfevide'ntv from bothiconstructions, the,V

l have shown and described w Y at I believe to be the simplest and best exemplifications of myv invention, which, however, lmaybe' modified without departing from the spirit of the invention. Y

What I claim is 1. Acover support, comprisingamember adapted to be pivotally securedtothe cover and depend. therefrom, a pair of members pivotally securedtothe lower end ofthefirst member and-to the cabinet or device towhich the cover is applied soy as to swing upwardly,

one of'said members being slidingly mounted so as to adapt ythe pivotal end. farthest removed fromthe first mentioned member.` to

.move towardv the fixed. pivotal* pointl of `the other member of said pair of-membera-,and yielding'means whereby the members of said pair are yieldin'gly heldin their upwardly .j swung position. v 2. A cover support, comprising amember vadaptedto have pivotal connection withthe cover and depend therefrom, a pair. ofy members pivotally secured; at one of their ends to the lower end of said vfirst member, while ,the other ends of both members of said pair have pivotal connection in the cabinet or. device to which the cover is securedfwiththe pivotal connection inthe cabinet of. one of saidlast mentioned ymembers being .adapted to move toward the other member of said pair `of members, and aspringsecuredto bothof the members of saidwpair of members',the pivotal connections between allofsaid members Y and the attachment points ofsaid spring beving so arranged that the pull of therspringY and the pivotal points will-be onHfdeady cen ter when the* support is in lowered ornonsupporting position. Y Y c 3. A cover. support, comprisinga member adapted to have pivotal .connectionwith the cover and.dependftherefrom,. apair of members'pivotally secured atpone of their ends to baradapted to be secured to the cabinet or member of said Vpair ofmembershaving a xed pivotal point :on said bar, while the other member of said pair hasjasliding pin device to whichk the ,cover is;sec ured, one

connection'in Vthe vslot of said bar, anda l Yspring secured to the .said pair ofmembers and adapted to: draw said members`into closer .relation with each otherV and. yield- 120 the lower end of said first memberga slotted ingly maintain the lower pivoted ends of said pair of members in juxtaposition against the weight of the cover.

4. A cover support, comprising a member adapted. to be pivotally secured at one end to a cover and depend therefrom, aV pair of members pivotally secured at one of their ends to the lower end of said first member, while the other ends of said pair of members have pivotal relation with the cabinet or device to which the cover is applied so as to permit said pair of members to swing upwardly, the pivotal relation between the cabinet and one of said pair of members being at a fixed point, while the pivotal rela-V tion with the cabinet of the other member of said pair is such that said member ma)7 move bodily toward the first mentioned member of said pair of members when the cover is raised, and means whereby the members of said pair of members are maintained under pressure and yieldingly held in their up* Wardly swung position.

BURR B. BLooD.

Witnesses:

GEORGE HEIDMAN, F. A. FLORELL.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

